The Zalman Zm-Mic1 on the frequently bough together section is pretty good, I've had one for quite a while an it's pretty good. It clips on the headphone cord and the sound is quite clear.
My go to website for headphones is http://www.head-fi.org you should definitely check it
here's a user review of the headphone you're interested: http://www.head-fi.org/t/546544/sams...udget-champion

That mic is the one I use and love it, probably best mic I've owned so far and even owned the Zalman ZM-Mic1 which didn't last long at all for me.The USB Logitech though I use it every day for voip / online gaming, cable is pretty long and its crystal clear no background noise.

If you don't mind (or even if you like) heavy bass the Razer Electra (I know razer is some times talked down, I'm not a big razer fan myself) seems to be a decent pair for the $50 price. It's also a headset that comes with a retractable mic, so you could also look into that. Don't expect audiophile quality, but for gaming it's seems to be good, according to reviews